General :: Display Status Of Assigned & Free Ip Addresses In A DHCP Range?
Jul 24, 2010how to display status of assigned & free ip addresses in a DHCP range assuming that i am working on a DHCP server ?
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General :: Two IP Addresses Could Never Be Assigned To Any Host Computer?
Nov 16, 2010Could you tell me what two IP addresses could never be assigned to any host computer?
View 2 Replies View RelatedGeneral :: Two DHCP IP Assigned To A Single Machine?
Apr 16, 2010I just installed Fedora 13 on my ESX box.I have Fedora 13 Machine which was early having 1 network adapter.I added a new Interface type: e1000 to this VM.Now,My ifconfig says:
Code:
[root@fedora-13 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:56:BA:00:15
inet6 addr: fe80::250:56ff:feba:15/64 Scope:Link
All i was trying to provide IP to eth0 and eth1 through dhcp.is it possible to provide two IP address to eth0 and eth1 both through DHCP.
General :: Ifconfig Alias Address Assigned By DHCP
Aug 13, 2010I would like to create several aliases to eth0, but have the addresses assigned by DHCP instead of being set to static IP's. Is this even possible? All the examples I've seen assign a static IP using the command:
ifconfig eth0:0 192.168.1.11 up
Ubuntu Networking :: IPv6 Addresses Cannot Be Assigned
Sep 18, 2010I'm trying to assign like 80 IPv6 addresses on eth0 for virtual webhosting, but after 55 addresses I get the following error:# ip addr add 2a01:9f8:a171:1651::4b:a8af dev eth0 RTNETLINK answers: File exists.What's the problem? I don't understand that error message at all. Is the number of IPv6 addresses per device somehow limited?Ubuntu 10.4.1 server, 64 bit.
View 1 Replies View RelatedGeneral :: Using IP Addresses - Statics And DHCP
Sep 17, 2010In school, use SUSE Server and made it by DHCP but in my hand I changed many rules. All are OK at the start but now they requested that they who are principal, and vice principals are want to use the Internet without filtering.
So I've made new rules by using Webmin software to control the SUSE Server. 1st I've gave static IP from LAN x.x.x.40 to x.x.x.45. 2nd IP is x.x.x.12 to x.x.x.15.
At First, there's nothing happen but now I've got problems because Server gave DHCP so that Server gives IP itself and conflict with static IPs. And also I can't find in Webmin software how to disable the DHCP Assign.
Networking :: Ping Global Inet6 Addresses Assigned Between Two Systems?
Mar 13, 2010Do any one knows how to ping global inet6 addresses assigned between two systems. I assigned inet6 address through "ip addr add 2001::4 dev eth0" and similarly 2001::5 in another machine and tried to ping 2001::5 from 2001::4, but it is showing,
sait87@static-host:~$ ping6 2001::5
connect: Network is unreachable
Do any one knows solution for this problem.
General :: Ram Showing Critical Status - Only Few Kb Are Free
Feb 16, 2010I am using nagios to monitor vm in blade servers, everything is working fine. The ram size of the vm is 4 gb and whenever the machine starts, the status of ram is critical as showing only few kb are free.
I set the critical limit as 5% and it comes as 3% and showing as critical. when i give top, i got it as
As shown in the % mem , the total memory used is of about 23% only whereas it shows used memory about 3.7 gb.
General :: Find Dhcp Status In System?
Apr 27, 2010How to find in linux(fedora12) if dhcp is running on network?
View 3 Replies View RelatedDebian Configuration :: VM Is Assigned IP By DHCP At Reconnect
Oct 1, 2015I'm running jessie on virtualbox.
I set staticIP at /etc/network/interfaces.
When I stop/start vm(not restart), dhclient becomes up and ip is assigned by dhcp. Why?
--------------------------------
yoshi@vbox:~$ uname -a
Linux vbox 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1 (2015-05-24) x86_64 GNU/Linux
--------------------------------
yoshi@vbox:~$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
[Code] ....
Networking :: How To Express Range Of Ip Addresses
Sep 22, 2010I do not currently fully understand relationship between binary numbers and ip addresses and subnet addresses; nor am I asking for an explanation here at LQ, when there are plenty at wikipedia and other places...
Even after reading the wikipedia article on it, I still don't grasp it completely, so I was hoping that someone who grasps it in its entirety could answer a simple question.
How can I express the range of ip addresses from 172.22.22.200 - 172.22.22.230 ?
I was trying to make a rule for iptables that only did nat on that specific range of ips, and when i tried used the "-s" flag followed by 172.22.22.200/11 it always changes to 172.0.0.0/11 in the actual rule that is created and displayed by iptables -t nat -L.
I already have many hosts defined on my network, and rather than going through each one and changing its ipaddress to 172.0.0.#, I was hoping to learn a way to represent them in the iptables rule.
Networking :: Using NMAP On A Range Of IP Addresses
Dec 21, 2010Hopefully Ody has found a result in the 5 years since he posted this question, for anyone else looking for an answer
NMAP scan for a range of individual IP's can be done using the '-' for example:
(this is accurate as of 2010, actual results have been altered to match OP's address range)
$nmap -sP 192.168.0.1-14
Starting Nmap 5.00 ( http://nmap.org ) at 2010-12-22 09:55
Interesting ports on 192.168.0.1:
Not shown: 999 closed ports
PORT STATE SERVICE
80/tcp open http
Interesting ports on 192.168.0.2
Not shown: 999 closed ports
PORT STATE SERVICE
80/tcp open http
Interesting ports on 192.168.0.3:
Not shown: 999 closed ports
PORT STATE SERVICE
80/tcp open http
Nmap done: 14 IP addresses (3 hosts up) scanned in 8.08 seconds
Security :: Restrict Access To Network To Only Dhcp Assigned Ip's?
Feb 28, 2011I'm trying to tighten up my network a bit. I've given my dhcp server a list of static mac addresses and ip's for computers i know, and a very short range of dhcp addresses that are redirected to kittenwar.My dilemma is that if someone has my wireless network password, or an ethernet cable, they could set the ip address manually and gain access.how can i deny them this pleasure?im running dhcpd3, and iptables on a debian/lenny intel 2.4 box. dd-wrt is running in a linksys wrt54g and is handling the wireless security
View 7 Replies View RelatedOpenSUSE Network :: How In World Do I Configure SSH With DHCP Assigned Address
Aug 7, 2011I am just trying to get SSH working between 2 local machines on OpensSuse 11.4 boxes. I have the SSHD daemon running, the firewall is configured to allow SSH to pass, and I am using SSH's password authentication. However, my machines cannot see each other. Anytime I try to SSH, I get "Could not resolve hostname<hostname>: Name or service not known."
Of course, that leads me to believe I need an entry in my /etc/hosts file. However, I use DHCP, and therefore have a dynamic IP address. Therefore, my hosts names will only be good until the next IP renewal. How in the world do I configure SSH with a DHCP assigned address?
Networking :: Configure Dhcp Server - Ip Is Not Getting Assigned To Client Machine
Nov 1, 2010i hav configure dhcp server. but the ip is not getting assigned to my client machine.
View 3 Replies View RelatedGeneral :: Widget On Desktop To Display Status?
Jul 13, 2010Is there any way where i can program a widget to display the status of different services. This widget should also be able to auto-update the service status if the service is being toggled with.
View 5 Replies View RelatedNetworking :: Monitor Dhcp For Unknown Mac Addresses
Oct 25, 2009I am using Ubuntu Server and would like to recieve an email once a day listing mac address's that have requested an ip address that are not in my list of known mac address's.
lookup=`grep $mac /root/dhcp.macs`
#This does not work as the first entry mac1 will be okay but mac2 and mac3 will not
#It will try to use mac2 as the file to look in which won't exist
#I need to make it loop through for each line of the variable and add that to the lookup value diff $mac $lookup
#I think this should differentiate known from unknown if i can get a lookup value
Networking :: Obtaining DHCP IP Addresses In 2 Distro's ?
Nov 22, 2008A quick rundown of my equipment and plan for this particular machine.
SOYO P4I845PEISA Motherboard
Intel Pentium 4 2.0GHz Processor
512MB DDR333 RAM
ATI Radeon 8500 128mb AGP Video Card
Using onboard AC'97 Audio and Davicom NIC
Linksys BEFSR81 Wired Router
I am setting up a multiboot system with several OS's, multiple versions of Windows & several Linux distros. The main point of it all is just to have a system where I can load up a given version of Windows or Distro of Linux if I need to test something or show someone how something works.
The Problem:
5 versions of Windows installed, all hardware configured and functioning properly (including NIC) All Windows versions obtain DHCP IP addy with no problems.
Installed Red Hat Linux 9 (first of my linux distros) and it autoconfigured all of my hardware and has no problem getting an IP address.
Installed Fedora 8 and it could not obtain an IP address. I fiddled around with the network settings changing this and that, covered all of the options, and it had no effect. By this time I was irritated, so I just formatted and reinstalled the whole thing, which had no effect and resulted in the same problem. I decided to try it again, this time turning off my sound card and nic for the initial installation. After the initial install, I turned on the sound card and booted up to install it, then restarted, turning on the nic to install it. Fedora installed them both, and managed to get an IP address from my router.
I looked at the ifcfg-eth0 file and the only thing that was different from the previous installs was that a line reading "type=ethernet" (I believe thats what it said) was not there in the working install and had been before.
Puzzling and irritating, but Fedora was now working so I moved to the next distro on my list.
openSUSE 11.0
First install I tried the same thing I did with Fedora (turning off the NIC which did not work like it did in Fedora)
Second install, left all of my hardware enabled, and made it to the part where it asks to verify your internet connection. I clicked Test, and got this error:
Opening of Connection
eth0 device: Davicom Semiconductor, Inc. 21x4x DEC-Tulip Compatible 10/100 Ethernet (rev 40) DHCP Client is already running on eth0
I finished the install, and then got on another machine and I searched the net for this error, but could find nothing that specifically applied to my problem. I played around with the network settings, tried a couple of things that I had come across in my search (changed between tulip and dmfe, checked the box for "Request Broadcast Response", ran "service network restart" in Terminal) none of these had any effect.
The most irritating thing about this is that RHL9 had no problem with this whatsoever and it is badly dated, and the much newer distros are choking on it.
Ubuntu Networking :: DHCP Server Not Handing Out Addresses?
Oct 20, 2010I have a MacBook Pro running VirtualBox with Ubuntu 10.10 as a guest. I am trying to run a DHCP server from within the Ubuntu VM. I need to do this in order to run a multicast utility. On a stand alone machine running Fedcora I have this working without fail but within the Ubuntu VM I am having troubles. The DHCP server is starting okay, but when I use a cross over cable connected to a device the device does not ever get an address.I have eth1 bound to my ethernet jack where I am trying to source the addresses, and eth2 bound to my airport which is disabled unless I need internet access.Here is my DHCP.conf file
Code:
###############################################################################
# Amino Communications Sample dhcpd.conf file #
[code]....
Networking :: DHCP Script - Assigning Multiple IP Addresses By Mac?
Sep 6, 2010Ive been trying to give certain clients an IP adres by mac adress. For this I use the folowing code:
host apex {
hardware ethernet 00:00:00:00:00:00;
fixed-address 192.168.250.100;
}
This works perfectly, however when I try to add a second client this way it doesnt. I tried to add the above code multiple times as a whole (2 times the above code) but that doesnt work. I also tried to just add more lines under host apex but this also doesnt work.
So my question is: How do I add more of this mac related IP adress assignments in the dhcp.conf?
Server :: DHCP Doesn't Provide Fixed Addresses
Apr 9, 2010Ubuntu LTS 8.04 + DHCP. Works fine except for fixed addresses. I mean all devices which need to get fixed IP according to their MACs don't get them and keep to receive random IPs from the range (although almost everytime all machines receive the same IP they got from DHCP for the first time).
The following config was created by Webmin interface.
At the one of the ubuntu forums i was advised to carry host description out of the subnet description.
CentOS 5 Server :: Use DHCP All Our Clients Use Dynamic IP Addresses For The Ease?
Sep 1, 2010I'm new to Centos 5 (and Linux) and, after installing Centos, I configured Samba, Apche, ... w/o problems (through interactive interface). My problem is tha t I need to use DHCP (all our clients use dynamic IP addresses for the ease) but I don't find dhcpd ... nor the sample config file(s).
Note : the new server I intend to use is actually connected on a LAN with an 'old' DHCP server (still under W2K server), is this the reason why I can't find/activate dhcp on my new machine ???
Ubuntu Networking :: Assigned Computer A's Static Ip To Computer C Without Changing Dhcp Setting?
Aug 18, 2010I set up a dhcp server in the lan and assigned static ips to two computers, computer A and B, according to their mac address. Everything was running fine. But when I turned off computer A, connected computer C to the network, and assigned computer A's static ip to computer C without changing dhcp setting. Computer C was able to access the internet. When I turned on computer A, dhcp couldn't assign an ip address to it, and computer C showed an error message of ip conflict and failed to use internet. I wonder if dhcp server is able to prevent other computer from using the same static ip that is already assigned to a computer according to its mac address.
View 5 Replies View RelatedRed Hat / Fedora :: DHCP Server On CentOS - Assigning The Highest Number From The IP Range
May 26, 2011I have a DHCP server running on CentOS and for some reason it is assigning the highest number from the IP range as a first one?
- range 192.168.1.20 - 192.168.1.50 - so the first IP on my PC recived from this DHCP server was .50 - is it normal behaviour?
Config file:
Fedora Networking :: Configuring IPv6 (network) Tunnelling - Getting Only Internal Addresses From DHCP
Aug 25, 2011I am trying to configure my IPv6 network. My computers are behind a Fedora gateway IPv6-configured, which is working great. But for computers inside my network, it seems I am getting only internal addresses from DHCP. Here is my ifconfig for an internal computer:
Quote: em1 Link encap:Ethernet HWaddr F4:6D:04:34:92:2B inet addr:192.168.0.184 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::f66d:4ff:fe34:922b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:744250 errors:0 dropped:0 overruns:0 frame:0 TX packets:548987 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:841392242 (802.4 MiB) TX ytes:60384500 (57.5 MiB) Interrupt:18 Memory:f7100000-f7120000
he-ipv6 Link encap:IPv6-in-IPv4 inet6 addr: 2001:470:1c:611::3/64 Scope:Global inet6 addr: fe80::cea7:b778/128 Scope:Link UP POINTOPOINT RUNNING NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:61 dropped:0 overruns:0 carrier:61 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[Code]....
Networking :: Superuser Will Get Mail System Memory Free Status
Oct 7, 2010The superuser will get a mail about the system memory free status every minute after 9pm?
Which is Correct:
1. * 21 * * * free
2. * 21-0 * * * free
Programming :: Java Program To Display All IP Addresses In LAN?
Feb 25, 2011I Want to Develop Network Scanner Software. For that i need "Java Program to Display All IP Addresses in LAN".
View 3 Replies View RelatedUbuntu Servers :: Display The Addresses That Have Been Issued By My Dhcp3?
Jan 1, 2011I want to display the associated host name with each address.
I've found the /var/lib/dhcp3/dhcpd.leases file, but it appears to have an entry for every time a lease was issued so it's hard to tell which ones are currently active.
Ubuntu :: Display Out Of Range After Installing Latest Version
Aug 4, 2010I have reloaded windows xp and now after installing ubuntu latest version, I get a boot menu that gives options. if I select the Ubuntu option, within a few seconds(2)the monitor shows "out of range"! However it is possible to get a command prompt from this menu,(Grub)by pressing "C" then Tab, which lists about 30 commands! But I cannot find what command will overide the ubuntu boot display setting! yet if it is possible in the disc boot F6 menu, then it follows that it must be possible in the hard disk boot menu? (ie nomodeset available on the disk F6, so using F6-nomodeset on the disk allows me to install or run from the disk, which then runs perfectly) Only I cannot make changes in the Ubuntu live that runs direct from the disk, to the installation on the hard drive. My Monitors Max is 75hz 1280x1024, LCD. And although not the latest model, Its still relatively current. Windows from the boot menu works fine.
View 1 Replies View RelatedUbuntu :: After Upgrade - Display - Getting A Small Box On Screen Saying OUT OF RANGE
Apr 30, 2011I have just spent hours upgrading 10.10 to 11.04 Natty and when I rebooted at the end, all I'm getting is a small box on screen saying OUT OF RANGE.
I do not have grub or windows or anything else to boot into, ubuntu was my main system, what can I do?
I have just tried another monitor and get the same thing.
Is there anyway I can boot in safe mode or something?
I am able to boot PC with a live CD (Karmic) but cant acess most of my files because I am not the owner apparently? Cant change permissions either?
Is there a way I can change something using the live CD so that Natty will boot properly?